What chapter does ayame sohma make his first appearance in fruits basket?

Ayame Sohma first appears in Chapter 13 of "Fruits Basket." He is introduced as the older brother of Yuki Sohma, bringing his flamboyant personality and a strong bond with Yuki into the narrative. Ayame's entrance adds depth to Yuki's backstory and highlights the complexities of the Sohma family dynamics.